rsync同步1649错误，请教怎么解决?谢谢！

 rsync -avz -e 'ssh -p 9090' /root/bmczData rsync_backup@10.46.4.4::backup

rsync_backup@10.46.4.4's password: 

Permission denied, please try again.

rsync_backup@10.46.4.4's password: 

Permission denied, please try again.

rsync_backup@10.46.4.4's password: 

Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).

rsync: did not see server greeting

rsync error: error starting client-server protocol (code 5) at main.c(1649) [sender=3.1.2]